[单项选择]Sharks have gained an unfair reputation for being fierce predators of large sea animals. Humanity’s unfounded fear and hatred of these ancient creatures is leading to a worldwide slaughter that may result in the extinction of many larger, coastal shark species. The shark is the victim of a warped attitude of wildlife protection: we strive only to protect the beautiful, nonthreatening parts of our environment. And, in our efforts to restore only nonthreatening parts of our earth, we ignore other important parts.
A perfect illustration of this attitude is the contrasting attitude towards another large sea animal, the dolphin. During the 1980s, environmentalists in the U. S. A. protested the use of driftnets for tuna fishing in the Pacific Ocean since these nets also caught dolphins. The environmentalists generated enough political and economic pressure to prevent tuna companies from buying tuna that had been caught in driftnets. In contrast to this effort, the populations of sharks
A. They prevented fishermen from selling them for meat.
B. They pressured fishermen into protecting dolphins by law.
C. They brought political pressure against tuna companies.
D. They created sanctuaries where dolphin fishing was not allowed.